Service difficulty report · Probe · Boeing 737924ER

Difficulty date
February 21, 2025
Submitted
February 24, 2025
Operation
Air carrier
Aircraft
N73445
Make and model
Boeing 737924ER
Aircraft serial
40000
Aircraft time
43,620 hours, 15,840 cycles
Part
Probe
Part number
202000308
Part serial
14519
Condition
Faulted
Location
Zone 500
Part time
9,005 hours, 3,459 cycles
Stage of operation
CR
How discovered
O
Nature of condition
P
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

LEFT WING TANK INDICATOR FLUXUATING UP AND DOWN PERFORMED NO.1 FQIS DRY RESISTANCE AND CAPACITANCE CHECK REF AMM 28-41-21-710-801, FOUND NO.1 FQIS TANK UNITS F2,F3,F4,F5,F6,F7 OUT OF TOLERANCE. REMOVED AND REPLACED NO.1 FQIS TANK UNITS F2,F3,F4,F5,F6,F7 REF AMM 28-41-21-000/400-801 REQUEST CDCCL VERIFICATION OF INSTALLATION PROCEDURE NO.1 FQIS TANK UNITS F2,F3,F4,F5,F6,F7 REF AMM 28-41-21-400-801. C/W'D THE CDCCL PORTION OF THE INSTALLATION OF THE NO.1 TANK FQIS TANK UNITS F2,F3,F4,F5,F6 & F7 IN REF TO AMM 28-41-21- 400-801. PERFORMED FQIS BITE TEST: PASS, NO FAULTS NOTED, FQIS PLACED BACK TO NORMAL CONFIGURATION REF AMM 28-41-21.